public class J03changliang {
    /*
    常量，值不会改变的量
        字面量
    3,
    "abc",
    3.1415926
     */
    public static void main(String[] args) {
        System.out.println(12);
        System.out.println("abc");
//        System.out.println(xyz);
        System.out.println("ab\"c");
//        转义
        System.out.println("ab\\c");
        System.out.println("ab\nc");
        //制表符
        System.out.println("ab\tc");
        System.out.println("=========");
        // ln  line
        System.out.println("abc");
        System.out.print("kk");
        System.out.println("====");
        System.out.print("a");
        //不写参数，默认打印一个空行
        System.out.println();
        System.out.print("b");
        System.out.println("====");
        System.out.println("@@@@@@@");
        System.out.println("@@@@@@@");
        System.out.println("@@@@@@@");

    }
}
